Computer Network Lab Work 5
Creating an Inter Virtual Local Area Network (VLAN)
A Virtual LAN is a group of devices on one or more LANs that are configured (using management software) to communicate as if those devices were connected to the same path, even though they are actually on different LAN segments. For computers on different VLANs to connect, a layer 3 device, such as a router, is required. The router used for VLAN routing must be capable of trunking to the switch. Therefore, the router must have a Fast Ethernet interface, and the router’s IOS must support trunking.
The key feature is that the interface can be made into subinterfaces and supports ISL and DOT1Q encapsulation. Inter-VLAN routing is the process of forwarding network traffic from one VLAN to another using a router. Each VLAN is associated with a unique IP subnet on the network. Subnet configuration facilitates the routing process in a multi-VLAN environment. When using a router to facilitate inter-VLAN routing, the router’s interface can be connected to different VLANs. Each device in a VLAN sends traffic through the router to reach another VLAN.
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